Results 1 to 10 of about 2,888,931 (157)

Electrical conductivity of anhydrous and hydrous gabbroic melt under high temperature and high pressure: implications for the high-conductivity anomalies in the mid-ocean ridge region [PDF]

open access: yesSolid Earth, 2023
The electrical conductivity of gabbroic melt with four different water contents (i.e., 0 %, 2.59 wt %, 5.92 wt %, and 8.32 wt %) was measured at temperatures of 873–1373 K and pressures of 1.0–3.0 GPa using a YJ-3000t multi-anvil high-pressure apparatus ...
M. Wang   +13 more
doaj   +1 more source

Stability and Thermoelasticity of Diaspore by Synchrotron X-ray Diffraction and Raman Spectroscopy

open access: yesFrontiers in Earth Science, 2021
The thermoelasticity and stability of diaspore (α-AlOOH, Al1.002Fe0.003OOH) were investigated in this study by in situ synchronous X-ray diffraction (XRD) and Raman spectroscopy methods at high pressure and high temperature conditions.
Shijie Huang   +17 more
doaj   +1 more source

Recycled carbonates elevate the electrical conductivity of deeply subducting eclogite in the Earth’s interior

open access: yesCommunications Earth & Environment, 2023
The elevated pressure and temperature conditions encountered by a subducted slab entering the deep Earth can substantially alter the chemical composition and physical properties of recycled carbonates.
Chenxin Jing   +5 more
doaj   +1 more source

Pressure-Induced Structural Phase Transition and Metallization in Ga2Se3 Up to 40.2 GPa under Non-Hydrostatic and Hydrostatic Environments

open access: yesCrystals, 2021
A series of investigations on the structural, vibrational, and electrical transport characterizations for Ga2Se3 were conducted up to 40.2 GPa under different hydrostatic environments by virtue of Raman scattering, electrical conductivity, high ...
Meiling Hong   +3 more
doaj   +1 more source

Experimental study on the electrical conductivity of quartz andesite at high temperature and high pressure: evidence of grain boundary transport [PDF]

open access: yesSolid Earth, 2015
In this study, the electrical conductivity of quartz andesite was measured in situ under conditions of 0.5–2.0 GPa and 723–973 K using a YJ-3000t multi-anvil press and a Solartron-1260 Impedance/Gain-Phase Analyzer.
K. S. Hui   +6 more
doaj   +1 more source

Experimental Research on Electrical Conductivity of the Olivine-Ilmenite System at High Temperatures and High Pressures

open access: yesFrontiers in Earth Science, 2022
Ilmenite is a common metallic oxide distributed in the mafic rocks from the Earth’s upper mantle, and thus the effect of ilmenite contents on the electrical structures of the Earth’s upper mantle should be investigated in detail.
Wenqing Sun   +8 more
doaj   +1 more source

Effect of chemical composition on the electrical conductivity of gneiss at high temperatures and pressures [PDF]

open access: yesSolid Earth, 2018
The electrical conductivity of gneiss samples with different chemical compositions (WA = Na2O + K2O + CaO  =  7.12, 7.27 and 7.64 % weight percent) was measured using a complex impedance spectroscopic technique at 623–1073 K and 1.5 GPa and a ...
L. Dai   +6 more
doaj   +1 more source

High-Temperature and High-Pressure Phase Transition of Natural Barite Investigated by Raman Spectroscopy and Electrical Conductivity

open access: yesFrontiers in Earth Science, 2022
We investigated the structural, vibrational, and electrical transport properties for natural barite under the conditions of 298–873 K and 1.5–35.0 GPa using a diamond anvil cell by virtue of Raman spectroscopy and electrical conductivity measurements ...
Meiling Hong   +7 more
doaj   +1 more source

Superionic effect and anisotropic texture in Earth’s inner core driven by geomagnetic field

open access: yesNature Communications, 2023
Earth’s inner core is heterogeneous and anisotropic. A new study based on computational simulation reveals the presence of ionic hydrogen flux in iron crystals, driven by the dipole geomagnetic field, which promotes the formation of observed inner core ...
Shichuan Sun   +7 more
doaj   +1 more source

Remediation of Annular Gas Migration along Cemented Wellbores Using Reactive Mineral Fluids: Experimental Assessment of Sodium Bicarbonate and Sodium Silicate-Based Solutions

open access: yesEnergies, 2021
Achieving zonal isolation along wellbores is essential for upholding the containment integrity of subsurface reservoirs and preventing fluid seepage to the environment.
Timotheus K. T. Wolterbeek   +1 more
doaj   +1 more source

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